[jira] Resolved: (DERBY-2935) DDMReader.readLengthAndCodePoint() decodes long integer incorrectly

["Knut Anders Hatlen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DERBY-2935?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Knut Anders Hatlen resolved DERBY-2935.
---------------------------------------

       Resolution: Fixed
    Fix Version/s: 10.4.0.0
       Derby Info:   (was: [Patch Available])

Committed revision 557513.

> DDMReader.readLengthAndCodePoint() decodes long integer incorrectly
> -------------------------------------------------------------------
>
>                 Key: DERBY-2935
>                 URL: https://issues.apache.org/jira/browse/DERBY-2935
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Server
>    Affects Versions: 10.1.3.1, 10.2.2.0, 10.3.1.1, 10.4.0.0
>            Reporter: Knut Anders Hatlen
>            Assignee: Knut Anders Hatlen
>            Priority: Minor
>             Fix For: 10.4.0.0
>
>         Attachments: decode-long.diff, test.diff
>
>
> DDMReader.readLengthAndCodePoint() contains code to decode a long integer from a byte array. This code is broken since it uses int operations and not long operations in the decoding. The long might be encoded using four, six or eight bytes, and since Derby currently always uses the four bytes encoding, the bug is not exposed in the current code.

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